<template>
	<el-container class="home-container">
		
		<el-header>
			<div>
				<img src="../assets/heima.png" alt="">
				<span>电商后台管理系统</span>
			</div>
			<el-button type='info' @click="logout" >退出</el-button>
		</el-header>
		<!-- 页面主体区域 -->
		<el-container>
			<!-- 侧边栏 -->
			<el-aside :width="isCollapse ? '64px' : '200px'">
				<div class="toggle-button" @click="toggleCollapse">|||</div>
				<el-menu background-color="#333744"
				      text-color="#fff"
				      active-text-color="#409BFF"
					  unique-opened
					  :collapse="isCollapse"
					  :collapse-transition="false"
					  router
					  :default-active="activePath">
					  <!-- 一级菜单 -->
				      <el-submenu v-for="(item,index) in menulist" :key="item.id" :index="item.id + ''">
						  <!-- 一级菜单模板区域 -->
				        <template slot="title">
				          <i :class="iconsObj[item.id]"></i>
				          <span>{{item.authName}}</span>
				        </template>	
						<!-- 二级菜单 -->
							<el-menu-item :index="'/' + subItem.path" v-for="subItem in item.children"
							:key="subItem.id" @click="saveNavState('/' + subItem.path)">
								<template slot="title">
									<i class="el-icon-menu"></i>
									<span>{{subItem.authName}}</span>
								</template>	
							</el-menu-item>							          
				        </el-submenu>
				      </el-submenu>
				     
				    </el-menu>
			</el-aside>
			<!-- 右侧内容 -->
			<el-main>
				<!-- 路由占位符 -->
				<router-view></router-view>
			</el-main>
		</el-container>
		
	</el-container>
</template>

<script>
export default {
	data() {
		return {
			//左侧菜单数据
			menulist: [],
			iconsObj: {
				'125': 'iconfont icon-user',
				'103': 'iconfont icon-tijikongjian',
				'101': 'iconfont icon-shangpin',
				'102': 'iconfont icon-danju',
				'145': 'iconfont icon-baobiao'
			},
			isCollapse: false,
			//被激活的地址
			activePath: ''
		}
	},
	created() {
		this.getMenuList()
		this.activePath = window.sessionStorage.getItem('activePath')
	},
	methods: {
		logout() {
			window.sessionStorage.clear();
			this.$router.push('./login');
		},
		//获取所有的菜单
		async getMenuList() {
			 const {data: res} = await this.$http.get('menus') //解构赋值
			 if(res.meta.status !== 200) return this.$message.error(res.meta.mgs)
			 this.menulist = res.data
			// console.log(res)
		},
		toggleCollapse() {
			this.isCollapse = !this.isCollapse
		},
		// 保存连接的激活状态
		saveNavState(activePath) {
			window.sessionStorage.setItem('activePath', activePath)
			this.activePath = activePath
		}
	}
}
</script>

<style lang="less" scoped>
.home-container {
	height: 100%;
}
.el-header {
	display: flex;
	justify-content: space-between;
	padding-left: 0;
	align-items: center;
	color: white;
	font-size: 20px;
	background-color: #373D41;
	> div {
		display: flex;
		align-items: center;
		span {
			margin-left: 15px;
		}
	}
}
.el-aside {
	background-color: #333744;
	.el-menu {
		border-right: none;
	}
}
.el-main {
	background-color: #EAEDF1;
}
.iconfont {
	margin-right: 10px;
}
.toggle-button {
	background-color: #4A5064;
	font-size: 10px;
	line-height: 24px;
	color: #fff;
	text-align: center;
	letter-spacing: 0.2em;
	cursor: pointer;
}
</style>
